That got your attention didn't it!.. Bloodborne site says that such a device could be 'easily developed' but manufacturers don't think it financially viable. ... Surely it would be, if available worldwide. And they could tap into the bad breath/ BO paranoia that most young people have anyway. They're already working on a phone app for STI detectors, and the diabetes test device only costs £50. I'd be willing to pay 5 times that for a smelly feet detector. Any Dyson types on this site? See you on Dragon's Den! Kx